Multiple-rim resilient wheel



H. iVlcDERMOTT.

MULTIPLE RIM RESILIENT WHEEL.

APPLICATION FILED JULY 1,1921.

Patented Aug. 1, 19221.

llllll 4ml III/11$; 9%

......... h A h n....

ATTORNEYS HENRY MoDllBP/IQTT, OE LEADVILLE, COLORADO.

MULTIPLE-RIM: RESILIIENT WHEEL.

Specification of Letters Patent.

Patented Aug. 1, 1922.

Application filed July 1, 1921. Serial No. 481,861.

To all 107mm it may concern Be it known that I, HENRY MoDnRMo'rT, acitizen of the United States, and a. resident of Leadville, in thecounty of Lake: and State of Colorado, have invented a new and usefulImprovement in lVlultiple-Rim Resilient .Vheels, of which the followingis a full, clear, and exact description.

My invention relates to vehicle wheels, and it consists in thecombinations, construc tions and arrangements herein described andclaimed. I

An object of my invention is to provide an all-metal wheel that issufliciently resilient for practical application to automobiles,tractors, and other vehicles.

A further object of my invention is to provide a wheel having a singlehub and a, plurality of rims having corresponding portions arranged tocontact the ground successively, whereby skidding is reduced to aminimum.

A further object of my invention is to provide a device of the characterdescribed having a. single hub and a plurality of rims arrangedeccentrically with respect to the: hub, whereby corres iionding portionsof the several rims contact the ground successively and a vehiclemounted on wheels en'ibodying my invention can be propelled more readilyover uneven surfaces and with less tractive power required than when thesame vehicle is mounted on ground wheels of an ordinary construction.

Other objects and advantages will appear I in the followingspecification, and the novel features of the invention will beparticularly pointed out in the appended. claims.

My invention is illustrated in the accompanying drawings, formin part ofthis app-lication, in which- Figure 1 is a side elevation of the device,

Figure 2 is a vertical transverse section through the device, and

Figure 3 is ahorizontal section. through the same.

Referring now to the drawings, 1 denotes a wheel hub having an axialbore 2 adapted to receive an axle 3. The hub 1 is main tained 011 theaxle 3 in any suitablemanner, as by means of the cap 5. A plurality ofspokes are integral witlnthe hub and extend radially therefromintermediate its length. Certain of said spokes, indicated at 6 arelonger than the remaining spokes, which are indicated at 7. The spokesare connected at their outer ends by arim 8 which is formed at thepoints of its junction with the relatively short spokes 7 to providesemi-cylindrical bearing members 9, 10, 11, and 12. it is to be observedthat the bearing members are positioned 90 apart. The bearing memhers 9,10, 11, and 12- have caps 9, 10, 11, and 12, respectively, that aresecured thereto by bolts 13 to secure a lining or bush 14: therein.Each-lining or bush 1 1 is cylindrical and, is adapted to receive acylindrical crank axle 15. The latter has crank disks or cylinders 16and 17 extending from opposite ends or faces thereof. In the drawings,the crank disks or cylinders 16 and 17 and the crank axle 15, which isalso cylindrical in form, are shown as being integral with one another.It will be understood that in actual practice the crank disks and axlewill be made separately and rigidly secured together in the positionshown or the bush 1 1 will be made in sections and mounted on the crankaxle 15 before the latter is arranged for rotation in one of the bearingmembers 9, 10, 11., and 12. A crank axle 15 is provided for each of thebearing members 9, 10, 11 and 12, and each crank axle is pro vided withthe relatively offset oppositely extending crank disks'or' cylinders 16and 17.

I now provide precisely identical annular rim members 18 and 19, each ofwhich is preferably hollow for lightness and has a diameter greater thanthat of the rim 8 so that the bearing-caps 9, 10 11, and 12 do notcontact the ground or other surfacecontacted by the rim members 18 and19 when the latter are carried upon the crank disks 16 and 17,respectively, as will now be described. Each of the rim members 18 and19 is formed with four spaced apart openings 2O therethroughintermediate its inner and outer walls and in each of the openings 20 isdisposed a bushing 21 adapted to receive one of the said crank disks.The open ings 20 in each rim member are positioned 90 apart tocorrespond with the spacing of the crank axles.

From the foregoing description of the various parts of the device, theoperation thereof may be readily understood. The rim members 18 and 19are arranged at opposite sides of the rim 8 so that each is positionedeccentrically with respect to the hub 1 and with respect to the other.Each of the crank i are mainta-med 17, respectively.

vbearings through openings disks or cylinders has a threaded opening 22in its outer end adapted to receive the shank 2301: a retaining cap 24that has a diameter greater than that of the opening 22, wherebythe rimmembers 18 and 19 on, the crank disks 16 and form-ed of the crank axle15 and thec'rank disks 16 and 17, is hollow and is adapted to holdalubricant which is fed to the several 'VVhenthe device is in theposition illus trated in Figure'l, the centers or axes of the rimmembers 18, and 19 and of the hubl are all located in the samehorizontal plane, the axis of the rim member 19'be'ingas tar in advanceof the axis of the hub 1 as the axis of the rim member 18 is in-therearo'l't the axis of the hub 1. The axesof the rim members 18.and 19are positioned 180 apart and each remains in the plane of the axis ofthe huh 1 during a complete revolution of the Wheel. Since correspondingportions of'the rim members 18 and 19 conta'ct the ground or othersurface traversed succes- ,sively, it is obvious that. the possibilityof skidding is reduced to a minimum, Furthermore', since each contactsthe ground 1n turntrom a neutral posltlon,

ment" on Wheels embodyingdtny invention 7 than when mounted on Wheels ofan ordimoves'into neutral position.

nary construction.

jars received by each rim member on ac- In addition, shocks and count ofinequalities of the surface traversed are absorbed Without beingimparted to the aXleB, this being particularly true on account of thefact that each rim member contacts the surface at intervals only andthen Consequently,

a vehicle; supported "for movement upon Wheels embodying my inventioncan be drawn over very rough and uneven surfaces Without detrimentallyaffecting the'vehicle. The device'can be made entirely otmetal and istherefore not quickly or to get vout of order easily in "service.

The double-acting crank the tractive resistance for a vehicle of a givenweight is less when the 'vehlcle s mounted for movelikely to Wear out- Iclaim: 1. A Wheel having a hub, a plurality of spokes carried by thehub, certain of said I spokesbeingrelatively-short and being positioned90 apart, a rim connecting the spokes at their outer ends and formed atthe points of its junction With the relatively short spokes to providesubstantially semi-cylindrical bearing members,a crank for each bearingmember, each crank comprising an apart, a crank comprising a hollow axleand relatively ofifset hollow crank disks projecting from opposite facesof the axle, one of said cranks being; provided for each bearing memberand eachbeing adapted to receive a lubricating substance, said crankbeing formed with a passage through its Walls for conducting thelibricating substance from the interior thereof to the bearing, and similar annular rim members carried at opsaid crank disks.

. It v eel comprising a hub, spokes, and a rim, said rim having crankbearings equally spaced therearound,'a hollow rim disposed on each sideof said first named rim, said hollow rimshaving crank bearings therein,and being equally spaced there around, and cranks disposed in thebearings in said hollow rims and said first named rim, and being adaptedto operatively connect said hollow rims to said first named HID HENRYMoD-ER-MOTT hub, a plurality of pcsite sides of the first named rim onthe-

